| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Interest income: |
| Interest income on loans | 164.0 | 147.2 | 143.4 | 137.2 | 119.8 | 102.7 | 91.6 | 81.6 |
| Interest income on investments | 22.3 | 17.2 | 14.7 | 12.5 | 10.9 | 9.9 | 7.4 | 8.3 |
| | 198.4 | 165.3 | 159.3 | 154.6 | 133.5 | 114.6 | 99.3 | 90.1 |
| Interest expense: |
| Interest on deposits | 4.3 | 4.0 | 9.1 | 12.6 | 7.4 | 5.9 | 3.8 | 3.0 |
| | 4.8 | 4.3 | 9.5 | 13.2 | 8.0 | 6.3 | 4.2 | 3.3 |
| Net interest income | 193.6 | 160.9 | 149.8 | 141.4 | 125.5 | 108.3 | 95.1 | 86.8 |
| Provision for loan losses | 6.5 | 1.9 | 4.5 | 0.2 | 5.5 | 2.9 | 6.3 | 0.8 |
| Net interest income after provision for loan losses | 187.1 | 159.0 | 145.3 | 141.2 | 120.0 | 105.5 | 88.7 | 86.0 |
| Deposit and loan fees | 2.8 | 3.0 | 2.6 | 3.7 | 3.5 | 3.5 | 3.4 | 3.5 |
| Gain on sale of investments, net | | | | | | | | 0.3 |
| Other non-interest income | 12.7 | 18.1 | 12.4 | 12.7 | 11.7 | 13.3 | 11.9 | 10.8 |
| Total non-interest income | 15.5 | 21.1 | 15.1 | 16.3 | 15.2 | 16.8 | 15.3 | 14.6 |
| Non-interest expenses | 93.6 | 91.8 | 82.4 | 82.2 | 75.5 | 67.8 | 58.2 | 56.3 |
| Pre-tax income before non-recurring items | 100.5 | 88.5 | 78.1 | 77.7 | 63.6 | 54.9 | 47.7 | 44.7 |
| Non-recurring items | 0.7 | 0.1 | 0.1 | 2.3 | 3.9 | 0.4 | 1.9 | 0.4 |
| Pre-tax income | 99.7 | 88.3 | 78.0 | 75.3 | 59.7 | 54.5 | 45.8 | 44.3 |
| Income taxes | 24.7 | 22.0 | 19.2 | 19.3 | 14.2 | 26.1 | 16.1 | 16.9 |
| Tax rate | 24.7% | 24.9% | 24.7% | 25.6% | 23.8% | 47.9% | 35.1% | 38.2% |
| Net income | 75.1 | 66.3 | 58.7 | 56.0 | 45.5 | 28.4 | 29.7 | 27.4 |
| Net margin | 37.1% | 36.8% | 36.6% | 35.6% | 33.7% | 23.2% | 28.6% | 27.2% |
| |
| Basic EPS | $96.55 | $84.01 | $74.03 | $71.18 | $56.82 | $35.03 | $37.44 | $34.82 |
| Diluted EPS | $96.55 | $84.01 | $74.03 | $71.18 | $56.82 | $35.03 | $37.44 | $34.82 |
| |
| Shares outstanding (basic) | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 |
| Shares outstanding (diluted) | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |